This is my little script to have a podcast retrieval engine that does everything I'd want it to and I couldn't find one that existed (at the time) that does the following:

• Can be called by cron or manually rather than something like "every 2 hours".
• Can ask about a feed or a particular episode (in order!) and then display information about it and then mark it or skip it or whatever for some feeds and just get the others.
• Will call a custom executable to do whatever with the d/l~ed file (in my case I put it in my own rotation for my mp3 player).